Motor puller



MOTOR FULLER Filed Sept. 15, 1950'- vgv/ 5, INVENTOR L 6' kaygs BY Mq-W ATTORNEYS Patented Nov. 18, 1952 UNITED STATES PATENT OFFICE -MT0R FULLER I Johnv L. Skaggs, Phoenix, Ariz.

Application September 15, 1950, Serial No. 185,100

1 Claim.

This invention relates to a puller for'mot'ors which-are mounted in sealed units.

In a number of electric refrigerators the motor is mounted in a sealed unit and for each make or type of refrigerator the manufacturer provides a puller for the unit. Inasmuch as the types of sealed units vary with each manufacturer, a repair shop must have on hand a separate puller for each type as the puller of one manufacturer cannot be satisfactorily used with other types,

It is, therefore, an object of this invention to provide a motor puller which is so constructed and arranged that it can be easily and quickly adapted to pull any type of motor.

Another object of this invention is to provide a motor puller which will not injure either the motor or housing.

With the above and other objects in view, my invention consists in the arrangement, combination and details of construction disclosed in the drawings and specification, and then more particularly pointed out in the appended claim.

In the drawings:

Figure l is a top plan view of a motor puller constructed according to an embodiment of this invention.

Figure 2 is a sectional view taken on the line 22 of Figure 1.

Figure 3 is a fragmentary side elevation of the device.

Figure 4 is a fragmentary sectional view taken on the line 4-4 of Figure 1.

Figure 5 is a detail side elevation of a modified form of puller bolt.

Figure 6 is a detail side elevation of another modified form of puller bolt.

Referring to the drawings, the numeral It designates generally a housing within which a motor II is pressed and firmly secured. Inorder to provide a means whereby the motor Il may be withdrawn from the housing III which forms a part of a sealed motor unit, I have provided a puller structure which includes a disc-shaped plate I2 provided with a plurality of radially disposed bracing webs I3. The plate I2 is provided with one series of radially disposed slots I4 which open through the marginal edges thereof and is also provided with a second-series of radially disposed slots or openings i5.

The slots or openings I l and I5 are disposed between the webs I3. A bolt I6 is extended through a slot l4 being threaded at its lower end as indicated at I! into the adjacent end of the motor II. The motor II is formed with a series of threaded openings I8 in the outer end thereof 2. sov that the motor may be removed from the nousing In by means of a pulling device.

The head l9 of each bolt I6 is disposed on the upper side of the plate I2 and a washer 20 is interposed between the head I9 and the upper side of the plate. A plurality of pressure bolts 2| are extended through the slots I5 and as shown in Figure 2 the lower ends of the bolts 2| are adapted to engage on a rim 22 which forms a part of the housing ID.

A nut 23 is threaded on each bolt 2| below the plate I2, and a washer 24 is interposed between the nut 23 and the lower side of the plate I2. Each washer 24 is provided with a pair of upwardly extending lugs 25 loosely engaging in the slots I5 so that the washers 24 will be held against rotation. Each bolt 2| also has fixed thereto a right angularly disposed bar 26 which extends right angularly from the lower end of the bolt and is adapted to engage the projecting portion of the motor II or a projecting portion of the housing In above the rim or flange 22.

The bar 26 provides a means whereby the bolt 2| will be held against rotation at the time the nut 23 is turned to unthread the nut 23 relative to the bolt 2| and thereby force the plate I2 upwardly.

In Figure 5 there is disclosed a modified form of puller bolt IBa having a threaded shank 21 with a hook 28 at the lower end thereof which is adapted to hook through an opening in a motor, and in Figure 6 there is disclosed another modified form of puller bolt Nib having a threaded shank 29 and a laterally projecting lug 30. These modified forms of puller bolts are used where the motor is not provided with threaded holes.

In the use and operation of this device the bolts I6 are extended through the slots I4 and threaded into the openings I8 in the adjacent outer end of the motor II. The pressure bolts 2| are extended through the slots I5 with the lower ends thereof engaging on the rim or flange 22 and with the nuts 23 positioned below the plate I2. The nuts 23 may thereupon be turned to unthread the nuts from the bolts 2| so that the plate I2 will be moved upwardly or endwise with respect to the housing I0. As the plate I2 moves upwardly or endwise relative to the housing In the bolts I6 which are secured to the motor II will pull the motor therewith.

Where a motor is not provided with threaded openings such as openings I8, bolts Isa or IIib are used. It will be understood that each man.- ufacturer has a special type of motor and special openings to receive the pulling devices, and for this reason special pulling bolts are required. A motor puller constructed according to this invention due to its construction and arrangement can be easily and quickly adapted to pull any type of sealed unit motor, and will not injure either the motor or motor housing.

What is claimed is:

A puller for pulling a motor from a flanged housing having apertures in the end thereof into which the motor is pressed, said puller comprising a plate formed with a plurality of radially disposed open ended slots, a plurality of headed bolts extending through certain ones of said slots and engaged in said apertures in said end of the motor, a plurality of pressure bolts extending through certain others of said slots, one end of each of said pressure bolts bearing against the flange of said housing, nuts threaded on said pressure bolts below said plate, a Washer on each pressure bolt between said nut and plate, lugs carried by each washer projecting into a slot for holding said washer against turn- 4 ing, and a laterally projecting bar fixed to and extending from the lower portion of each pressure bolt for engagement with a part of the m0- tor or housing to hold said pressur bolts against turning when said nuts are turned to move said plate and hence displace said motor.

JOHN L. SKAGGS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 573,323 Drysdale Dec. 15, 1396 577,953 Hanna Mar. 2, 1897 1,443,052 Stephens Jan. 23, 1923 1,865,420 Kirk June 28, 1932 FOREIGN PATENTS Number Country Date 223,732 Great Britain Oct. 30, 1924 

